CN102266608A - Pressure detection device and breathing machine with same - Google Patents
Pressure detection device and breathing machine with same Download PDFInfo
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- CN102266608A CN102266608A CN2010106183258A CN201010618325A CN102266608A CN 102266608 A CN102266608 A CN 102266608A CN 2010106183258 A CN2010106183258 A CN 2010106183258A CN 201010618325 A CN201010618325 A CN 201010618325A CN 102266608 A CN102266608 A CN 102266608A
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Abstract
The invention provides a pressure detection device and a breathing machine with the same. The pressure detection device comprises a valve body, a valve cap, an elastic membrane and a pressure regulation part, wherein the valve body is provided with a first inlet; the valve cap is connected with the valve body, and a valve cavity is formed between the valve body and the valve cap; the elastic membrane is arranged in the valve cavity to divide the valve cavity into a first valve cavity and a second valve cavity; the first valve cavity is communicated with the first inlet; the pressure regulation part is installed in a mounting hole in the valve cap, and extends into one end of the second valve cavity to elastically contact with the elastic membrane; the side of the elastic membrane facing the second valve cavity is provided with a first connecting terminal; the inner wall of the valve cap is provided with a second connecting terminal; and the first connecting terminal has a first state (in contact with the second connecting terminal) or a second state (separate from the second connecting terminal). The pressure detection device provided by the invention has the advantages of small size, simple structure, low manufacturing cost, good exchangeability among parts, favorable air tightness under safe pressure upper limit, and high sensitivity and high operation stability when detecting the airway pressure upper limit, and is economical, convenient and quick for maintenance.
Description
Technical field
The present invention relates to medical instruments field, in particular to a kind of pressure-detecting device and have the respirator of this checkout gear.
Background technology
In the use of medical apparatus and instruments such as respirator, anesthetic machine, must carry out mechanical ventilation to the patient, for the patient who is receiving treatment, the size control of ventilation is very important, particularly infant patient and Cavity in Critical Patients, the accurate control that this not only needs flow more needs the sensitivity reaction to airway pressure.Also promptly, must reach on the setting pressure in system and export the signal of telecommunication quickly and accurately in limited time, application valve body is closed, and stops air feed; Can valve body be opened and be lower than in limited time on the setting pressure, recover air feed in system.Therefore pressure-detecting device is vital for the control of aspects such as the precision of medical apparatus and instruments such as respirator, anesthetic machine, safety.
Concerning the very strict apparatus of gas flow required precision, need pressure-detecting device to possess higher sensitivity and certain subject range for respirator and anesthetic machine etc.Existing application promotes microswitch in the pressure-detecting device of respirator relief valve by reaction diaphragm, realizes unlatching, closing control to valve body.But be subjected to the restriction of its structural design, only be applicable to the detection of lower pressure.
Also be not specifically designed to respirator and pressure-detecting device that can adapt to high pressure in the prior art at present, most pressure-detecting devices are used for main equipments such as automobile, the structure more complicated, and sensitivity is not strong.
Summary of the invention
The present invention aims to provide a kind of pressure-detecting device and has the respirator of this checkout gear, to solve the problem that pressure-detecting device complex structure in the prior art, sensitivity are not high, can't adapt to high pressure.
To achieve these goals, according to an aspect of the present invention, provide a kind of pressure-detecting device, having comprised: valve body has first import; Valve gap is connected with valve body, forms valve pocket between valve body and the valve gap; Flexible sheet is arranged in the valve pocket, and valve pocket is separated into first valve pocket and second valve pocket, and wherein, first valve pocket is communicated with first import; The pressure regulating part is installed in the installing hole on the valve gap, and its pressure regulating part stretches into an end and the flexible sheet Elastic Contact of second valve pocket; Flexible sheet is provided with first splicing ear towards a side of second valve pocket, and the inwall of valve gap is provided with second splicing ear, and first splicing ear has first state or isolating second state that contacts with second splicing ear.
Further, the circumferential edge place of flexible sheet is the projective structure towards the second valve pocket projection, and the cross section of projective structure is a circular arc.
Further, first splicing ear is a metal backing, and flexible sheet has the annular groove at the clamping first splicing ear edge towards second valve pocket, one side.
Further, flexible sheet has the edge of projective structure, and the edge is clamped between valve body and the valve gap.
Further, the pressure regulating part comprises: regulate bolt, be spirally connected with installing hole; Spring is installed between flexible sheet and the adjusting bolt.
Further, the inboard of regulating bolt has first projection, has second projection on first splicing ear, and the two ends of spring are set in respectively on first projection and second projection.
Further, second splicing ear is a becket.
Further, pressure-detecting device of the present invention also comprises: connector is connected with valve body, and has second import that is communicated with first import.
Further, first import is a shoulder hole, and connector has the protuberance that stretches into first import, is provided with hermetically-sealed construction between the hole shoulder of protuberance and shoulder hole.
According to a further aspect in the invention, provide a kind of respirator, had above-mentioned pressure-detecting device.
Pressure-detecting device of the present invention is provided with the installation site of pressure regulating part according to the predetermined safe force value; Simultaneously first splicing ear is set on flexible sheet, second splicing ear is set on the inwall of valve gap.When pressure in the air flue when setting safe pressure, first splicing ear on the flexible sheet does not contact with second splicing ear under the effect of pressure regulating part, does not form the loop, normal ventilation in this moment air flue; When pressure in the air flue is higher than the setting safe pressure, flexible sheet overcomes the effect of pressure regulating part, move along the second splicing ear direction, be arranged on the first splicing ear movement therewith on the flexible sheet, first splicing ear is contacted with second splicing ear, form the loop, export the signal of telecommunication this moment, the control closed electromagnetic valve; Like this, realized the function of pressure detecting.The detection that pressure-detecting device according to the present invention is simple in structure, highly sensitive, can adapt to high pressure.
Description of drawings
The Figure of description that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structure chart of the embodiment of pressure-detecting device of the present invention; And
Fig. 2 shows the working state figure when pressure-detecting device reaches the safe pressure value among Fig. 1.
The specific embodiment
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Referring to Fig. 1, show the structure chart of an embodiment of pressure-detecting device, as can be seen from Figure, the pressure-detecting device of present embodiment comprises: valve body 3 has first import 32; Valve gap 7 is connected with valve body 3, forms valve pocket between valve body 3 and the valve gap 7; Flexible sheet 5 is arranged in the valve pocket, and valve pocket is separated into first valve pocket 31 and second valve pocket 71, and wherein, first valve pocket 31 is communicated with first import 32; The pressure regulating part is installed in the installing hole 72 on the valve gap 7, and the pressure regulating part stretches into an end and flexible sheet 5 Elastic Contact of second valve pocket 71; Flexible sheet 5 is provided with first splicing ear 4 towards a side of second valve pocket 71, and the inwall of valve gap 7 is provided with second splicing ear, 6, the first splicing ears 4 and has first state or isolating second state that contacts with second splicing ear 6.
During the work of the pressure-detecting device of present embodiment, with connector 1 with pressure-detecting device be installed in control in the air flue, and line is connected with second splicing ear 6 with first splicing ear 4 respectively.The installation site of pressure regulating part is set according to the predetermined safe force value.When pressure in the air flue when setting safe pressure, first splicing ear 4 on the flexible sheet 5 does not contact with second splicing ear 6 under the effect of pressure regulating part, does not form the loop, normal ventilation in this moment air flue; When pressure in the air flue is higher than the setting safe pressure, flexible sheet 5 overcomes the effect of pressure regulating part, move along second splicing ear, 6 directions, be arranged on first splicing ear, 4 movement therewith on the flexible sheet 5, first splicing ear 4 is contacted with second splicing ear 6, form the loop, export the signal of telecommunication this moment, the control closed electromagnetic valve; Like this, realized the function of pressure detecting.Simultaneously, also be provided with on valve gap 7 and let out passage 73, when pressure is higher than setting pressure in the air flue, be used for gushing of second valve pocket, 71 interior gases, in addition, the line of second splicing ear 6 also needs from then on disappointing passage 73 to be connected to the pressure-detecting device outside.
As shown in Figure 1, for the intensity that improves flexible sheet 5, prolong its service life when increasing its induction area, preferably, the circumferential edge place of flexible sheet 5 is the projective structure 51 towards second valve pocket, 71 projectioies, and the cross section of projective structure 51 is a circular arc.Through repeatedly experiment, above structure is flexible sheet 5 most preferred structures.In addition preferably, flexible sheet 5 has the edge 53 of projective structure, and edge 53 is clamped between valve body 3 and the valve gap 7, edge 53 act as fixedly flexible sheet 5, edge 53 is arranged on the junction of valve body 3 and valve gap 7 simultaneously, also helps the sealing of device.
Preferably, first splicing ear 4 is a metal backing, and flexible sheet 5 has the annular groove 54 at clamping first splicing ear 4 edges towards second valve pocket, 71 1 sides.The induction area of metal backing is big, has improved the sensitivity of pressure detecting.Preferably, second splicing ear 6 is a becket, is copper ring in the present embodiment, and is stressed even when copper ring can make metal backing be in contact with it, effectively the sensitivity of pressurize detection and the stability of this device work.
Preferably, the pressure regulating part comprises: regulate bolt 10, be spirally connected with installing hole 72; Spring 8 is installed between flexible sheet 5 and the adjusting bolt 10.According to the predetermined safe force value, come regulating spring 8 to stretch into the degree of depth of second valve pocket by turning adjusting bolt 10, when pressure was less than the setting safe pressure in the air flue, first splicing ear 4 and second splicing ear 6 were in released state; When pressure in the air flue is higher than when setting safe pressure, flexible sheet 5 the first valve pocket gas to its applied pressure effect under, overcome the elastic acting force of spring 8, first splicing ear 4 is contacted with second splicing ear 6, form the loop, export the signal of telecommunication this moment, the control closed electromagnetic valve.Certainly, also can be on valve gap 7 outer walls welded nut 9, regulate bolt 10 and be spirally connected by nut 9 and valve gap 7.Preferably, the inboard of regulating bolt 10 has on first projection, 101, the first splicing ears 4 and has second projection 41, and the two ends of spring 8 are set in respectively on first projection, 101 and second projection 41.The effect of first projection, 101 and second projection 41 is retainer spring 8, makes spring 8 can not cause sensitivity to descend because of skew.
Preferably, this device also comprises connector 1, is connected with valve body 3, and has second import 11 that is communicated with first import 32.First import 32 is a shoulder hole, and connector 1 has the protuberance 12 that stretches into first import 32, is provided with hermetically-sealed construction 2 between the hole shoulder of protuberance 12 and shoulder hole.Conveniently pressure-detecting device is connected into the air flue of controlling by connector 1, hermetically-sealed construction 2 helps the sealing of device simultaneously.
The present invention also provides a kind of respirator, and respirator is a kind of assisted ventilation unit, and it is connected patient end simultaneously by suction nozzle and exhaust tube.The patient discharges gas by air tube again from respirator suction nozzle draw gas.Pressure-detecting device is placed on the air-breathing module of suction nozzle front end with the safe pressure in the control air flue.Use respirator of the present invention to stress reaction sensitivity in the air flue, reach on the setting pressure in system and can export the signal of telecommunication quickly and accurately in limited time, application valve body is closed, and stops air feed; Can valve body be opened and be lower than in limited time on the setting pressure, recover air feed in system.The design principle of this programme can be generalized to carrying out pressure detecting control in the very strict apparatus of gas flow required precision.
Need to prove, the pressure that is used for the detected gas path that pressure-detecting device according to the present invention is not limited in the foregoing description to be exemplified out, in the embodiment that other do not exemplify out, this pressure-detecting device can also be used to detecting the pressure in the fluid path such as oil circuit path, the pressure detecting in other fluid paths is controlled realizing.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a pressure-detecting device is characterized in that, comprising:
Valve body (3) has first import (32);
Valve gap (7) is connected with described valve body (3), forms valve pocket between described valve body (3) and the described valve gap (7);
Flexible sheet (5) is arranged in the described valve pocket, and described valve pocket is separated into first valve pocket (31) and second valve pocket (71), and wherein, described first valve pocket (31) is communicated with described first import (32);
The pressure regulating part is installed in the installing hole (72) on the described valve gap (7), and described pressure regulating part stretches into an end and described flexible sheet (5) Elastic Contact of described second valve pocket (71);
Described flexible sheet (5) is provided with first splicing ear (4) towards a side of described second valve pocket (71), the inwall of described valve gap (7) is provided with second splicing ear (6), and described first splicing ear (4) has first state or isolating second state that contacts with described second splicing ear (6).
2. pressure-detecting device according to claim 1 is characterized in that, the circumferential edge place of described flexible sheet (5) is the projective structure (51) towards described second valve pocket (71) projection, and the cross section of described projective structure (51) is a circular arc.
3. pressure-detecting device according to claim 2, it is characterized in that, described first splicing ear (4) is a metal backing, and described flexible sheet (5) has the annular groove (54) at described first splicing ear of clamping (4) edge towards described second valve pocket (71) one sides.
4. pressure-detecting device according to claim 3 is characterized in that, described flexible sheet (5) has the edge (53) of projective structure, and described edge (53) are clamped between described valve body (3) and the described valve gap (7).
5. according to each described pressure-detecting device in the claim 1 to 4, it is characterized in that described pressure regulating part comprises: regulate bolt (10), be spirally connected with described installing hole (72); Spring (8) is installed between described flexible sheet (5) and the described adjusting bolt (10).
6. pressure-detecting device according to claim 5, it is characterized in that, the inboard of described adjusting bolt (10) has first projection (101), have second projection (41) on described first splicing ear (4), the two ends of described spring (8) are set in respectively on described first projection (101) and described second projection (41).
7. pressure-detecting device according to claim 3 is characterized in that, described second splicing ear (6) is a becket.
8. pressure-detecting device according to claim 1 is characterized in that, also comprises: connector (1) is connected with described valve body (3), and has second import (11) that is communicated with described first import (32).
9. pressure-detecting device according to claim 8, it is characterized in that, described first import (32) is a shoulder hole, described connector (1) has the protuberance (12) that stretches into described first import (32), is provided with hermetically-sealed construction (2) between the hole shoulder of described protuberance (12) and described shoulder hole.
10. a respirator is characterized in that, has each described pressure-detecting device in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618325.8A CN102266608B (en) | 2010-12-31 | 2010-12-31 | Pressure detection device and breathing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010618325.8A CN102266608B (en) | 2010-12-31 | 2010-12-31 | Pressure detection device and breathing machine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102266608A true CN102266608A (en) | 2011-12-07 |
| CN102266608B CN102266608B (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010618325.8A Expired - Fee Related CN102266608B (en) | 2010-12-31 | 2010-12-31 | Pressure detection device and breathing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102266608B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874084A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Exhalation valve and respirator provided with same |
| CN107747744A (en) * | 2017-10-16 | 2018-03-02 | 中山德厨科技有限公司 | A kind of on-off type pressure test device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074284A (en) * | 1992-01-11 | 1993-07-14 | 马列夫 | A kind of pressure reducing valve |
| US20020162553A1 (en) * | 2001-05-07 | 2002-11-07 | Hamilton Robert M. | Portable gas powered positive pressure breathing apparatus and method |
| CN201139854Y (en) * | 2007-12-14 | 2008-10-29 | 陈美诗 | Breathing machine |
| CN101642597A (en) * | 2008-08-05 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Expiratory valve |
-
2010
- 2010-12-31 CN CN201010618325.8A patent/CN102266608B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074284A (en) * | 1992-01-11 | 1993-07-14 | 马列夫 | A kind of pressure reducing valve |
| US20020162553A1 (en) * | 2001-05-07 | 2002-11-07 | Hamilton Robert M. | Portable gas powered positive pressure breathing apparatus and method |
| CN201139854Y (en) * | 2007-12-14 | 2008-10-29 | 陈美诗 | Breathing machine |
| CN101642597A (en) * | 2008-08-05 | 2010-02-10 | 北京谊安医疗系统股份有限公司 | Expiratory valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874084A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Exhalation valve and respirator provided with same |
| CN104874084B (en) * | 2014-02-28 | 2019-07-05 | 北京谊安医疗系统股份有限公司 | Outlet valve and ventilator with it |
| CN107747744A (en) * | 2017-10-16 | 2018-03-02 | 中山德厨科技有限公司 | A kind of on-off type pressure test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102266608B (en) | 2014-02-26 |
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Granted publication date: 20140226 Termination date: 20151231 |
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